Door latch



FIG. 1 is a perspective view of a door latch showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines environment is for illustrative purpose and forms no part of the claimed design. 

CLAIM I claim the ornamental design for a door latch, as shown and described. 